Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2
Category
Browse mineral (specifically a variety of quartz) specimens identified by the Rock Identifier community.
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2
Diopside (likely Chromian Diopside)
Diopside, part of Clinopyroxene family of inosilicates. Chemical formula: CaMgSi2O6. The green variety is often Chromian Diopside due to chromium impurities.
Orange Calcite
Calcium Carbonate (CaCO3)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Chert/Quartzite)
Silicon Dioxide (SiO2)
Jasper (Petrified Wood variant)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Crazy Lace Agate
Chalcedony (Silicon Dioxide, SiO2)
Dalmatian Stone (Dalmation Jasper)
Aplite with Arfvedsonite inclusions
Jasper (specifically Fancy Jasper or Bloodstone variety)
Silicon Dioxide (SiO2) with impurities (Iron oxides/silicates)
Moldavite
Moldavite (Silica-rich glass, SiO2 + Al2O3)
Red Tiger's Eye beads
Tiger's Eye (variety of Chalcedony, SiO2)
Green Porphyry (Flowerstone)
Porphyritic Andesite or Basalt
Graphic Granite
Graphic Granite (a variety of Pegmatite)
Agate (specifically Oco or Banded Agate)
Agate (a variety of Chalcedony), SiO2 (Silicon Dioxide)
Chalcedony with Quartz Crystals
Silicon Dioxide (SiO2)
Chalcedony (Common Agate)
Cryptocrystalline Quartz (SiO2)
Quartz Geode
Crystalline Silicon Dioxide (SiO2) within a geode structure
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartzite (specifically an iron-stained or Carnelian-colored variety)
Silicon Dioxide (SiO2) with iron oxide inclusions
Quartz (Milky Quartz)
Quartz (SiO2 - Silicon Dioxide)
Pink Granite
Phaneritic Intrusive Igneous Rock (Granite)
Quartz Geode
Silicon Dioxide (SiO2)
Greenstone
Greenschist / Greenstone (contains epidote, chlorite, and actinolite)
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Rose Quartz
Silicon dioxide / Quartz (SiO2)
Quartz (specifically Clear or Rose Quartz)
Silicon Dioxide (SiO2)
Citrine
Silicon dioxide (SiO2)
Pink Granite Porphyry
Phaneritic Granodiorite (Quartz + Feldspar + Mica)
Herkimer Diamond
Quartz (Silicon Dioxide, SiO2)
Citrine
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Agate (specifically, multi-colored or pastel-dyed agate)
Silicon dioxide (SiO2) - specifically, a cryptocrystalline variety of quartz known as Chalcedony, with banding classified as Agate. (If it were Fluorite, the chemical formula would be Calcium Fluoride - CaF2).
Ocean Jasper
Spherulitic Chalcedony (SiO2)
Green Aventurine
Quartz (Silicon Dioxide, SiO2) with fuchsite inclusions
Quartzite (specifically a river-worn cobble)
Quartzite (primarily Silicon Dioxide, SiO2)
Rose Quartz
Silicon dioxide (SiO2)
Pink Granite
Phaneritic Igneous Rock (composed of orthoclase, quartz, and mica)
Jasper
Silicon dioxide (SiO2)
Polished red jasper
Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides
Green Jasper
Microcrystalline Quartz (Chalcedony), SiO2